Was vacuuming fine and suddenly the thing won't turn on. Tried another plug.
Same thing happened to my Wertheim 4030. It turned out to be a broken connection in the retractable cord plug, no doubt due to continual shock upon retraction. How did I find it? By pulling the top off and first checking the internal switch was working with an ohmmeter (definitely no power for this test) Then plugged in, powered up & checked if any power to switch with AC voltage tester(be careful and have unit RCD protected for your safety) None showing, so checked if power at internal reel. None, so switched off power and checked continuity of cord for active and neutral continuity. None in one so cut off plug and checked again OK so new plug fitted and reassembled. If I had power to the switch originally, the motherboard/rheostat or motor may have been the problem. Hot wiring the motor would have determined which(unlikely to be both but a possibility) Repair or replace faulty item, obviously checking motor brushes first. Electrical is simply a matter of isolation and elimination.
May 16, 2008 |